Banks Power Dual Monster Exhaust System

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Cab & Bed Configuration:
2001-2005 GM 6.6L Duramax LB7/LLY
Banks Power
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Banks Monster Diesel Duals 4" exhaust system offers up to a 150% improvement in airflow and slashes backpressure up to 98%! The streamlined head pipe assembly (non-cat.-converter equipped vehicles only), intermediate pipe(s) and 3-1/2" tailpipes are formed of stainless, heavy-wall tubing with constant-diameter bends to slash backpressure. The dual tailpipes have 52% more flow area than a single 4" tailpipe.

The polished-stainless Monster muffler features a straight-through 4"-diameter flow-path with an exclusive expansion chamber to dissipate the annoying mid-range exhaust drone that accompanies most straight-through mufflers. Monster muffler utilizes spun ceramic, very-high-temperature packing, more than triples stock flow, and delivers an authoritative exhaust sound. Now for the cool part: Banks’ exclusive 6” X 5” ob-round polished-stainless angle-cut rolled-edge tailpipe tips (patent pending)! System safely clears spare tire, shocks and brake lines. 

Application Notes


Split-dual exhaust applies to single-rear wheel applications only (they do not fit appropriately on duallys)

5-Year Warranty.

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(68 Ratings, 2 Reviews) Average Rating:
BAD exhaust doesn't last
scott (emporium, pa) 4/27/2014 9:19 AM
Got the banks power pack 3 years ago and it has completely rusted and about to fall off and the headers after 2 years had a leak. For most of that time I lived where it didn't snow much and I washed the under the truck after every winter. The exhaust should have lasted longer hell the factory lasted longer then it.
Steve (Ontario, Canada) 7/4/2010 10:15 PM
I was note very impressed with the sound quality of the exhaust. Also once shipped to me the muffler had a dent in it and also one of my tips. Very easy to install tho.